Solve the linear inequality. Other than ?, use interval notation to express the solution set and graph the solution set on a number line.
? 
- 
A. (-?, -2]
B. 
C. (-?, 2]
D. [2, ?)
Answer: A
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Find all the polar coordinates of the point.(4, ?/4)
A. (4, ?/4 + 2n?), (-4, -?/4 + 2n?) B. (4, ?/4 + 2n?), (-4, 3?/4 + 2n?) C. (4, ?/4 + 2n?), (-4, -3?/4 + 2n?) D. (4, ?/4 + 2n?), (4, -3?/4 + 2n?)
Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Using Thevenin's Theorem, what is fCO of an equivalent circuit for a lowpass filter when R1 = 5.6 Kê, R2 = 6.8 Kê, R3 = 10 Kê, and C = 1200 pF.
a. 15.1 KHz
b. 11.7 KHz
c. 56.4 KHz
d. 8.7 KHz
e. 6.2 KHz
Answer the question.Which of the following statements is true concerning the graph of f(t) = tan t?
A. The graph is symmetric about the x-axis. B. The graph is symmetric about the y-axis. C. The graph contains no symmetry. D. The graph is symmetric about the origin.